Pleco Ceramics Pleco Cave Small is a high quality pleco cave made of brown clay fired at high temperatures. This makes them absolutely safe for people, aquarium fish and pets. Pleco caves can be used to aid the reproduction of many kinds of plecos. Ideal for Hypancistrus zebra L046, Hypancistrus L174, Peckoltia Compta L134, Ancistrus Wabenmunster, Bristlenose plecos, Hypancistrus L333 gold, Hypancistrus L236 and many others. These caves look very natural and realistic in the tank and are ideal for Aquascaping. Just flush the tube in running water before use.